corydoras hastatus

The Tail Spot Pygmy Cory, also known as the Black Diamond Pygmy Cory, is a small, active, and attractively marked catfish native to the Rio Guapore basin in Southern Brazil. Unlike most Corydoras, this species swims mid-water as well as near the bottom, making it an engaging addition to a planted or aquascaped aquarium. These fish are peaceful and best kept in schools of 10 or more.

Tank Setup & Environment

• Minimum tank size: 38 L

• Well-planted or aquascaped tank with open swimming areas

• Provide hiding spots such as driftwood, rocks, or dense vegetation

• Keep in groups for confident schooling behavior

Water Conditions

• Temperature: 22–26 °C

• pH: 6.5–7.5

• Hardness: Soft to moderate

Diet & Feeding

• Omnivorous: sinking catfish pellets, flakes

• Supplement with live or frozen foods: brine shrimp, daphnia, bloodworms, small insect larvae

• Feed multiple small portions per day for active fish

Tank Mates

• Peaceful, small community fish with similar water requirements

• Other pygmy corydoras and nano fish

• Avoid aggressive or large predatory species

Behavior & Temperament

• Peaceful and social schooling fish

• Active swimmers in both mid-water and near the substrate

• Hardy and suitable for beginners and community setups

Care Level

• Easy